Arapaho, Assiniboin and Atsina Indians of Canada

Arapaho. This tribe probably occupied
Canadian territory in prehistoric times in southern Saskatchewan and
perhaps in southern Manitoba. (See
Wyoming.)

Assiniboin. A tribe of the Siouan linguistic family which
separated from the Dakota in the late prehistoric period, living
first, it is thought, about Rainy Lake and Lake of the Woods but,
from about 1675, on Assiniboin and Saskatchewan Rivers west of Lake
Winnipeg. Their lands extended southward to the Missouri and a part
of the tribe were finally placed on reservations in Montana. (See
Montana.)

Atsina. These were a branch of the Arapaho and were popularly
known as Gros Ventres, or, in order to distinguish them from another
tribe so called, Gros Ventres of the Plains. They were sometimes
known as Fall Indians from the circumstance that they were supposed
formerly to have lived at the falls of the Saskatchewan River, near
the junction of its north and south branches. (See
Montana.)